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Monitoring Traces (XMLA)

You can use the Subscribe command in XML for Analysis (XMLA) to monitor an existing trace defined on an instance of Microsoft SQL Server 2005 Analysis Services (SSAS). The Subscribe command returns the results of a trace as a rowset.

Specifying a Trace

The Object property of the Subscribe command must contain an object reference to either an Analysis Services instance or a trace on an Analysis Services instance. If the Object property is not specified, or a trace identifier is not specified in the Object property, the Subscribe command monitors the default session trace for the explicit session specified in the SOAP header for the command.

Returning Results

The Subscribe command returns a rowset containing the trace events captured by the specified trace. The Subscribe command returns trace results until the command is canceled by the Cancel command.

The rowset contains the columns listed in the following table.

Column

Data type

Description

EventClass

Integer

The event class of the event received by the trace.

EventSubclass

Long integer

The event subclass of the event received by the trace.

CurrentTime

Datetime

The time at which the event started, when available. For filtering, expected formats are 'YYYY-MM-DD' and 'YYYY-MM-DD HH:MM:SS'.

StartTime

Datetime

The time at which the event started, when available. For filtering, expected formats are 'YYYY-MM-DD' and 'YYYY-MM-DD HH:MM:SS'.

EndTime

Datetime

The time at which the event ended, when available. For filtering, expected formats are 'YYYY-MM-DD' and 'YYYY-MM-DD HH:MM:SS'.

This column is not populated for event classes that describe the start of a process or action.

Duration

Long integer

The amount of total time (in milliseconds) elapsed for the event.

CPUTime

Long integer

The amount of processor time (in milliseconds) elapsed for the event.

JobID

Long integer

The job identifier for the process.

SessionID

String

The identifier of the session for which the event occurred.

SessionType

String

The type of the session for which the event occurred.

ProgressTotal

Long integer

The total number or amount of progress reported by the event.

IntegerData

Long integer

Integer data associated with the event. The contents of this column depend on the event class and subclass of the event.

ObjectID

String

The identifier of the object for which the event occurred.

ObjectType

String

The type of the object specified in ObjectName.

ObjectName

String

The name of the object for which the event occurred.

ObjectPath

String

The hierarchical path of the object for which the event occurred. The path is represented as a comma-delimited string of object identifiers for the parents of the object specified in ObjectName.

ObjectReference

String

The XML representation of the object reference for the object specified in ObjectName.

NestLevel

Integer

The level of the transaction for which the event occurred.

NumSegments

Long integer

The number of data segments affected or accessed by the command for which the event occurred.

Severity

Integer

The severity level of an exception for the event. The column can contain one of the following values:

Value

Description

0Success

1Information

2Warning

3Error

Success

Boolean

Indicates whether a command succeeded or failed.

Error

Long integer

The error number of the event, if applicable.

ConnectionID

String

The identifier of the connection for which the event occurred.

DatabaseName

String

The name of the database for which the event occurred.

NTUserName

String

The Windows user name of the user associated with the event.

NTDomainName

String

The Windows domain of the user associated with the event.

ClientHostName

String

The name of the computer on which the client application is running. This column is populated with the values passed by the client application.

ClientProcessID

Long integer

The process identifier of the client application.

ApplicationName

String

The name of the client application that created the connection to the Analysis Services instance. This column is populated with the values passed by the client application, rather than the displayed name of the program.

NTCanonicalUserName

String

The Windows canonical user name of the user associated with the event.

SPID

String

The server process ID (SPID) of the session for which the event occurred. The value of this column directly corresponds to the session ID specified in the SOAP header of the XMLA message for which the event occurred.

TextData

String

The text data associated with the event. The contents of this column depend on the event class and subclass of the event.

ServerName

String

The name of the Analysis Services instance for which the event occurred.

RequestParameters

String

The parameters of the parameterized query or XMLA command for which the event occurred.

RequestProperties

String

The properties of the XMLA method for which the event occurred.

Vea también

Conceptos

Using XML for Analysis in Analysis Services (XMLA)

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